face palm

options_from_hashes_for_select.rb

  def options_from_hashes_for_select(hashes, value, display, selected=nil)
    attributes = 'attr_accessor ' + hashes.first.map do |key, value|
      "#{key.downcase.to_sym.inspect}"
    end.join(', ')

    eval <<-RUBY
      class X
        #{attributes}
      end
    RUBY

    collection = hashes.map.each do |hash|
      x = X.new
      hash.each do |key, value|
        x.send("#{key.downcase}=", value)
      end
      x
    end
    options_from_collection_for_select(collection, value, display, selected)
  end